cannot decrease ban time

p2p/pex/addrbook.go

@@ -769,16 +769,17 @@ func (a *addrBook) addBadPeer(addr *p2p.NetAddress, banTime time.Duration) bool
 	// check it exists in addrbook
 	ka := a.addrLookup[addr.ID]
 	// check address is not already there
-	if ka != nil {
-		if _, alreadyBadPeer := a.badPeers[addr.ID]; !alreadyBadPeer {
-			// add to bad peer list
-			ka.ban(banTime)
-			a.badPeers[addr.ID] = ka
-			a.Logger.Info("Add address to blacklist", "addr", addr)
-		}
-		return true
+	if ka == nil {
+		return false
 	}
-	return false
+
+	if _, alreadyBadPeer := a.badPeers[addr.ID]; !alreadyBadPeer {
+		// add to bad peer list
+		ka.ban(banTime)
+		a.badPeers[addr.ID] = ka
+		a.Logger.Info("Add address to blacklist", "addr", addr)
+	}
+	return true
 }
 
 //---------------------------------------------------------------------

p2p/pex/errors.go

@@ -64,7 +64,7 @@ func (err ErrAddrBookInvalidAddr) Error() string {
 	return fmt.Sprintf("Cannot add invalid address %v: %v", err.Addr, err.AddrErr)
 }
 
-// Err is thrown when the address is banned and therefore cannot be used
+// ErrAddressBanned is thrown when the address has been banned and therefore cannot be used
 type ErrAddressBanned struct {
 	Addr *p2p.NetAddress
 }

p2p/pex/known_address.go

@@ -56,7 +56,9 @@ func (ka *knownAddress) markGood() {
 }
 
 func (ka *knownAddress) ban(banTime time.Duration) {
-	ka.LastBanTime = time.Now().Add(banTime)
+	if ka.LastBanTime.Before(time.Now().Add(banTime)) {
+		ka.LastBanTime = time.Now().Add(banTime)
+	}
 }
 
 func (ka *knownAddress) isBanned() bool {